Just because I think they are awesome.
The girls, well, Grandbebe Girl the First anyway, being the one that talks, almost always asks if they can play the 'pinana', to which I always answer 'yes, single fingers,and be careful to not smash fingers opening and shutting the keyboard...'.
Because why not.
I remember the grandmother on my father's side rarely let me play the piano at their home when we were visiting. As a gradeschooler. Who had taken lesson from age 5. I was not going to be pounding the keys, in other words. But then, I don't remember that we were allowed to do much at their home, except to read, and listen in on the adult conversation. I do remember there was soda pop, though...
My point is...I am not that grandmother.
I generally don't have soda pop at my house.